On 11/29/2021 3:03 AM, whit3rd wrote:
> On Monday, November 22, 2021 at 7:01:39 PM UTC-8, ABLE1 wrote:
> 
>> I was thinking about installing a simple MOV on the Transformer
>> that feeds power to the Alarm Board. The industry standard is
>> 16.5VAC 40VA plug in Transformer. 120 Volt Input.
>>
>> Can anyone point to a specific MOV that would serve as a good
>> lightning or surge protection if placed across the output
>> terminals of the transformer??
> 
> If you do that, the lightning has its way with the primary and secondary
> windings of the transformer; why not use an MOV on the input terminals?
> 

Hi whit3rd,

If I did that then Safety would be in question.
Now that I know that others were not doing something
of betterment I decided to scrap the idea.

Better to purchase a plug in surge protector.

Les

On Monday, November 22, 2021 at 7:01:39 PM UTC-8, ABLE1 wrote:

> I was thinking about installing a simple MOV on the Transformer 
> that feeds power to the Alarm Board. The industry standard is 
> 16.5VAC 40VA plug in Transformer. 120 Volt Input. 
> 
> Can anyone point to a specific MOV that would serve as a good 
> lightning or surge protection if placed across the output 
> terminals of the transformer?? 

If you do that, the lightning has its way with the primary and secondary
windings of the transformer; why not use an MOV on the input terminals?

On 11/23/2021 1:40 AM, Phil Allison wrote:
> ABLE1 wrote:
> ===========
>>
>> I am an Alarm Technician among other things or stuff.
>>
> 
>   ** Your secret is safe with me....
> 
>> I was thinking about installing a simple MOV on the Transformer
>> that feeds power to the Alarm Board. The industry standard is
>> 16.5VAC 40VA plug in Transformer. 120 Volt Input.
>>
>> Can anyone point to a specific MOV that would serve as a good
>> lightning or surge protection if placed across the output
>> terminals of the transformer??
> 
> ** NO  -   MOVs must go on the primary side to be any use.
> 
> 
>> I have seen a NTE524V15 used by others but looking at the spec's
>> it seems to be a bit much for the application.
>>
>> https://bit.ly/3cEuvax
>>
>> Any thoughts out there??
> 
> ** That is a primary side device.
> 
> 
>> Thanks for any insight.
> 
> **  Better than nothing in my experience.
>   
> 
> ......  Phil
> 

Thanks Phil and have a good day!!!

ABLE1 wrote:
==========> 
> I am an Alarm Technician among other things or stuff. 
> 

 ** Your secret is safe with me.... 

> I was thinking about installing a simple MOV on the Transformer 
> that feeds power to the Alarm Board. The industry standard is 
> 16.5VAC 40VA plug in Transformer. 120 Volt Input. 
> 
> Can anyone point to a specific MOV that would serve as a good 
> lightning or surge protection if placed across the output 
> terminals of the transformer?? 

** NO  -   MOVs must go on the primary side to be any use.


> I have seen a NTE524V15 used by others but looking at the spec's 
> it seems to be a bit much for the application. 
> 
> https://bit.ly/3cEuvax 
> 
> Any thoughts out there?? 

** That is a primary side device.


> Thanks for any insight. 

**  Better than nothing in my experience.
 

......  Phil 

Hello,

I am an Alarm Technician among other things or stuff.

I was thinking about installing a simple MOV on the Transformer
that feeds power to the Alarm Board.  The industry standard is
16.5VAC 40VA plug in Transformer.  120 Volt Input.

Can anyone point to a specific MOV that would serve as a good
lightning or surge protection if placed across the output
terminals of the transformer??

I have seen a NTE524V15 used by others but looking at the spec's
it seems to be a bit much for the application.

https://bit.ly/3cEuvax

Any thoughts out there??

Thanks for any insight.

Les