Search: Posts Made By: westom
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02-28-16, 10:34 AM
Replies: 53
Views: 6,942
Posted By westom

AllanJ has asked same questions I asked. He also...

AllanJ has asked same questions I asked. He also asked about your transfer switch operation that still remains a suspect for many reasons including one I originally provided. Why did you ignore how...
02-27-16, 09:39 PM
Replies: 53
Views: 6,942
Posted By westom

Furd has his answer. He does not have the...

Furd has his answer. He does not have the anomaly. You do. You decide and act on what you want to do - not Furd.

Good diagnostic procedure always identifies a problem before seeking a solution....
02-27-16, 09:38 AM
Replies: 53
Views: 6,942
Posted By westom

A surge is a current. That means it flows...

A surge is a current. That means it flows through a GFCI and everything else in a path to a furnace controller - simultaneously. Long later, something in that path fails. Does not matter if a GFCI...
02-26-16, 08:51 PM
Replies: 53
Views: 6,942
Posted By westom

It already exists inside every furnace controller...

It already exists inside every furnace controller and all other appliances. Described is a transient that exceeds what appliances are already designed to withstand without damage. Existing internal...
02-26-16, 09:06 AM
Replies: 53
Views: 6,942
Posted By westom

Batteries do not absorb transient currents. In...

Batteries do not absorb transient currents. In fact, circuit theory (superposition) defines that battery as short circuit (an ideal conductor) for that surge. On-line UPS is to avert the long...
02-25-16, 08:56 PM
Replies: 32
Views: 3,296
Posted By westom

A surge is a current source. That means current...

A surge is a current source. That means current will flow no mater what would restrict it. An impedance increase means an increased surge voltage. Even sharp wire bends increase impedance.

How...
02-25-16, 12:01 PM
Replies: 53
Views: 6,942
Posted By westom

Problematic is trying to cure an anomaly with a...

Problematic is trying to cure an anomaly with a protector rather than fix the reason for that anomaly. For example, a transfer switch should disconnect hot wires before disconnecting the neutral. ...
02-25-16, 11:53 AM
Replies: 32
Views: 3,296
Posted By westom

All this is about impedance. Every foot longer...

All this is about impedance. Every foot longer increases impedance. That protector is not doing protection. That protector must connect low impedance to what does protection.

Follow a bar...
02-12-16, 10:27 AM
Replies: 6
Views: 801
Posted By westom

Shape of a plug defines power. A standard wall...

Shape of a plug defines power. A standard wall receptacle (two parallel prongs) is only rated for 15 amps (also called NEMA 5-15). A twenty amp plug is intentionally designed differently - also...
12-10-15, 07:01 AM
Replies: 31
Views: 1,240
Posted By westom

> I'd be better off connecting to the grounds in...

> I'd be better off connecting to the grounds in my garage panel instead of the neutral.

Neutral still must have a connection to earth via a protector as was noted in an earlier post. Otherwise...
12-06-15, 09:10 AM
Replies: 31
Views: 1,240
Posted By westom

Which means the protector is not earthed. When...

Which means the protector is not earthed. When the sub-panel does not bond neutral and earth together, then a different protector is needed to connect safety ground (that neutral bus bar) to earth...
11-27-15, 11:47 PM
Replies: 31
Views: 1,240
Posted By westom

> I believe in and used protection in layers;...

> I believe in and used protection in layers; Main panel, sub-panels and at the device.

Each layer of protection is defined by what absorbs energy. Main panel has an earth ground. Sub panel and...
11-26-15, 07:32 PM
Replies: 31
Views: 1,240
Posted By westom

Thicker cables do not lower impedance. Low...

Thicker cables do not lower impedance. Low impedance is mostly about shorter cables, with no sharp bends, no splices, not inside metallic conduit and other factors. That is why a 'whole house'...
11-26-15, 04:08 PM
Replies: 31
Views: 1,240
Posted By westom

No protector does protection. An effective...

No protector does protection. An effective protector is only a connecting device to earth. Any protector (ie at the garage door opener) that does not make a low impedance (ie less than 10 feet)...
09-16-15, 07:53 PM
Replies: 11
Views: 1,791
Posted By westom

A foot of wire makes little different compared to...

A foot of wire makes little different compared to a long hardwire (ie less than 10 feet) connecting to earth. However an 80 Kamp protector also has a side effective of a lesser voltage during a...
09-16-15, 02:02 PM
Replies: 11
Views: 1,791
Posted By westom

> Makes me think about my own garage openers that...

> Makes me think about my own garage openers that aren't on surge protectors.

Protection involves two factors - protector life expectancy over many surges. And protection during each surge.
...
08-30-15, 08:41 AM
Replies: 41
Views: 3,406
Posted By westom

> 4. When running the copper wire for my new...

> 4. When running the copper wire for my new grounding rod, will the copper wire just
> simply exit the house about 2 feet above the ground, run down the brick, and go
> into the ground? Or do I...
08-24-15, 09:31 AM
Replies: 56
Views: 4,176
Posted By westom

APC devices do not check for earth ground. It...

APC devices do not check for earth ground. It can only report when a safety ground is detected. It cannot even say safety ground is good. It can only report some types of safety ground defects. ...
08-24-15, 09:07 AM
Replies: 56
Views: 4,176
Posted By westom

Wall receptacle safety ground is not earth...

Wall receptacle safety ground is not earth ground. That third prong is for human protection; not ror transistor protection. Since a wall wart includes galvanic isolation, double insulated, etc,...
08-22-15, 02:10 PM
Replies: 56
Views: 4,176
Posted By westom

A nearby strike that does not connect inside the...

A nearby strike that does not connect inside the house is mostly irrelevant. A strike far down the street to utility wires is a direct strike incoming to every household appliance.

Lightning is...
08-21-15, 10:34 AM
Replies: 56
Views: 4,176
Posted By westom

Article about MOVs only discusses that one part...

Article about MOVs only discusses that one part of a system. It is technically flawed in that degradation should never cause a thermal fuse to blow. A thermal fuse only blows (trips) when the MOV...
08-19-15, 02:27 PM
Replies: 56
Views: 4,176
Posted By westom

If a surge is too large for an MOV, MOV must...

If a surge is too large for an MOV, MOV must disconnect from that surge. And leave that surge still connected to appliances. This failure due to a protector being grossly undersized. That 'failed'...
08-18-15, 03:06 PM
Replies: 56
Views: 4,176
Posted By westom

Knowledge of how a protector works means MOVs are...

Knowledge of how a protector works means MOVs are never sacrificial devices. MOVs fail only because the protector is grossly undersized, no properly earthed, and other reasons. Your protector...
08-18-15, 07:50 AM
Replies: 56
Views: 4,176
Posted By westom

It is this simple. How many feet from each...

It is this simple. How many feet from each incoming wire to the earth ground rods. Best surge protection for a neutral wire is a direct connection connected low impedance (ie less than 10 feet) to...
07-19-15, 05:24 PM
Replies: 7
Views: 823
Posted By westom

That Tripplite does not claim to protect from a...

That Tripplite does not claim to protect from a type of surge that typically does damage.

View a $10 power strip protector in Walmart. That Monster (maybe selling for $80) is electrically...
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