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ContinuousWave: Small Boat Electrical
Montauk 170 DC Distribution for Accessories
|Author||Topic: Montauk 170 DC Distribution for Accessories|
posted 02-28-2010 10:25 AM ET (US)
The OEM console switches are limited in quantity on the Montauk 170 console. I want to control the supply of power to (turn OFF-ON) the following devices: Aquatic Stereo, two Lowrance HDS-5’s and a Standard Horizon GX2100 VHF. I will be installing a Blue Sea System On-Off two-position switch to direct the flow of power from two Odyssey PC 1200 batteries. On the Montauk console is one accessory switch. My thought was to run the positive feed from the console accessory switch to a marine grade relay [coil] input, the main positive relay input connection to the output of the Blue Sea battery switch, and the relay output to a small fused positive distribution block. All negative wires will be connected to a negative distribution block. Any thoughts about this configuration? Is the reliability of relays in a marine environment a [concern]? Any chance of having a ground loop with the stereo? Space is very limited in the console and I’d like o keep all of this in the console, as apposed to cutting a new switch panel into the console.
posted 02-28-2010 10:42 AM ET (US)
It is somewhat difficult to describe electrical wiring in narrative form. If I understand your proposal, you intend to use a single-pole single-throw normally open switch on the console to control the coil of a relay. The relay contacts will distribute the battery positive to several loads. This is a workable plan.
posted 02-28-2010 04:46 PM ET (US)
Jimh - yes your explanation is correct. Do you have any recommendations on what relay to purchase?
posted 02-28-2010 08:22 PM ET (US)
I don't have a relay recommendation--at least not for a specific product. I'd use a relay designed for marine applications and whose coil was rated for 100-percent duty cycle. Perhaps Blue Seas makes something. You might try contacting them to see if they have a recommendation.
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