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Great service Quick refund on the wrong part ordered. Correct part reordered and received 2 days latter. Great company to deal with.
1st order by Jan from QLD
CMS Electracom manufactures a range of soft-wired power points and cables for caravan and motorhome 240V systems.
CMS products can let the builder pre-fit many cables and power point locations into the walls during construction. The 240V system still needs the correct circuit protection, final connection, inspection and testing by a qualified electrician.
CMS is available in two different systems: J-Series, which is used by Jayco, and C-Series, which is available to other manufacturers including Enerdrive.
The two series use a different style connection, so components cannot be interchanged between the two systems unless you use the correct adaptor.
If replacing parts in an existing system, stay with the same series. If you are starting from scratch, you may be able to choose either J-Series or C-Series depending on the components and approvals required for the installation.
Each CMS component will have either J3 or C3 codes stamped on it. If you cannot find the code, you can also identify the system visually.
The J-Series has a larger plug/socket than the C-Series, as shown below. The interconnecting cables are also an easy way to tell them apart: J-Series cables are beige, while C-Series cables are white.
A standard set-up would include the CMS power inlet that accepts 240V power into your RV via a 15amp extension lead.
A CMS circuit breaker has a loom that connects to the power inlet then off to the first power point.
A second cable then also connects to the rear of the first power point and heads off to the next power point. This continues around the RV.
You can also place a double adapter into the rear of a power point (extra recess space required) or at the junction of two cables. From here you can branch a new line off the original. This is ideal if you need a low and high power point on one wall, or you wish to start a new line on the other side of the RV.
The last power point in a line uses the inlet only and the outlet stays available for future use. You can also end the circuit with an external outlet for use outside under your awning.
All power points include double pole switches to comply with Recreational Vehicle requirements.
Lights and light switches are now almost always installed as 12V, so they are not included in the CMS range.
All CMS components we sell comply to Australian and NZ standards for installation in Recreational vehicles. AS/NZ 3112, AS/NZ 61535.1 Int):2001 AS/NZ 3000:2000, 250V 50HZ 20amp. A maximum of 10 double or 12 single points can be included in a single circuit.
As mentioned above a 15amp circuit breaker or 15amp RCD must be included in each electrical circuit. These components are now used by a number of Australia RV manufacturers due to their ease of use.
In designing your cable requirements and installation be mindful that each cable has sealed ends that measures 25mm x 16mm. So if it cannot be installed before sheeting it must be able to be fitted through frame members. All cables have a female and male end to prevent errors in connecting the cables.
All fittings have a security clip so once connected they require manual manipulation to separate. Each power point requires a recess depth of 32mm. Mounting blocks are available where the power point cannot be recessed as described. The cables have an outer sheath and when placed within walls should allow extra length for removal of the power point in case replacement is required.
A lot of customer questions about CMS systems are really about adding an inverter, transfer switch, extra 240V input, or earthing connection. These are not simple plug-and-play changes.
Do not cut CMS leads, make your own CMS plugs, or connect an inverter into the 240V circuit unless the work is designed, connected and tested by a qualified electrician using parts suitable for that installation. Inverter changeover wiring, RCD protection, earthing and generator/shore-power isolation all need to be correct.
If you are building from scratch, the safe approach is to plan the 240V layout early, install the accessible CMS runs and outlets as allowed, then have the electrician confirm the circuit protection, inverter/changeover arrangement, earthing and final testing before the walls are closed up.
These products are very good quality. For the full range of both J-Series and C-Series components, see below:
Great service Quick refund on the wrong part ordered. Correct part reordered and received 2 days latter. Great company to deal with.
Very good service and delivery time.
Great service from the staff