Author Topic: SPD on a Trailer Based Chassis Grounded System  (Read 93 times)


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SPD on a Trailer Based Chassis Grounded System
« on: January 27, 2017, 09:13:37 AM »
Hi all

I curious to know how you would go about installing a SPD on a purely 24V DC chassis grounded electrical system.

The electrical system utilises the chassis as a ground reference. I've got a 24V battery system and trailer mounted PV array with a DC generator on board. No AC, no inverters. I've deployed an earth stake which is also connected to the trailer chassis (I've got some antennas connected to the trailer).

Just interested to know how you would utilise a Midnite Solar SPD in this situation. Would I tie the 0V and Ground wires to the same terminal and trunk this connection to the earth stake?

Thanks for your input!


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Re: SPD on a Trailer Based Chassis Grounded System
« Reply #1 on: January 27, 2017, 03:44:51 PM »
you should check to see if the battery - is connected to the chassis. if so you can tie the - and ground together on the spd  and take it to either the battery or chassis ground otherwise keep them separate going to their appropriate - and ground. if - and chassis ground are tied together you will be able to ground out the positive surge spikes, but not the negative on the spd. the negative spikes should make their way straight to the earth stake you placed and not need to pass through an spd. hope this clarifies it for you.
« Last Edit: January 27, 2017, 03:48:05 PM by niel »