Siemens Panels w/ FirstSurge Device

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infinity

infinity

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I might need to replace a 200 amp, 40 circuit Siemens panel and am looking at a Siemens 40/60 panel. I see that the new Siemens panels can be ordered with built in surge protection. Has anyone used one of these before? I would prefer Square D QO but I'm reusing the existing breakers. There are two versions the one in the photo is the more expensive one with copper bus and a higher surge rating.

Here's a link:https://www.homedepot.com/p/Siemens...rge-Device-Installed-P4060B1200S140/300077927

siemens-main-breaker-boxes-p4060b1200s140-64_1000.jpg
 
infinity said:
I might need to replace a 200 amp, 40 circuit Siemens panel and am looking at a Siemens 40/60 panel. I see that the new Siemens panels can be ordered with built in surge protection. Has anyone used one of these before? I would prefer Square D QO but I'm reusing the existing breakers. There are two versions the one in the photo is the more expensive one with copper bus and a higher surge rating.

Here's a link:https://www.homedepot.com/p/Siemens...rge-Device-Installed-P4060B1200S140/300077927

siemens-main-breaker-boxes-p4060b1200s140-64_1000.jpg
Click to expand...

Was it installed by Siemens itself or Homedepot? Isn't it whole house SPD must installed near the main breaker to get lower let-through voltage at the load?

This is the reason that even with my just 12 space Siemens Panel, I had to force it at the top left beside the main breaker even when I can put it inside at the bottom just to satisfy the requirement that SPD leads must be at short as possible.

pOBH1j.jpg


I need to know something which I hope someone can really answer since this thread has relation to it.
If a meter of wire has impedance of 1 uH. What is the impedance of a meter of bus bar?​
I asked it in the computation forum https://forums.mikeholt.com/showthread.php?t=196674 but no one answered it.
 
tersh said:
This is the reason that even with my just 12 space Siemens Panel, I had to force it at the top left beside the main breaker even when I can put it inside at the bottom just to satisfy the requirement that SPD leads must be at short as possible.

pOBH1j.jpg
Click to expand...
Why are the white and green(?) wires unterminated??? :?
 
LarryFine said:
Why are the white and green(?) wires unterminated??? :?
Click to expand...

Because as I have stated before, all homes in Philippines don't have ground wire and neutral. And the unit will function fine if it detects the ground wire and neutral shorted even when not connected the real neutral or ground.

The protection modes and MOV engaged are only line to line, not line to neutral, or line to ground. But at least it's better than nothing just to protect the full house 6 Siemens 2-pole GFCI breakers circuitry powered by 240v to 120v step down autotransformer inside.
 
LarryFine said:
You mean that enclosure is floating? :eek:
Click to expand...

It's bolted at the back and not floating in air.
Lol. Just kidding.

Yeah it's floating (conductively). But the short main feeder wires are directly connected to the main breaker lugs which is only short distance and no way can it contact to the chassis accidentally. It's the only GFCI unprotected wire inside.

But precaution to open the breaker cover and push the GFCI buttons montlhy was solved by wearing these including
arc flash rated gloves:

QPpyQS.jpg


I don't want to hijack this thread especially one started by a moderator (or just anyone). Hehe. So I won't write much except to ask this related question:

If a meter of wire has impedance of 1 uH. What is the impedance of a meter of bus bar? If it's much lesser than 1 uH, then the OP posted connection makes sense. I need to know the answer. ​
 
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